| /* |
| * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of ARM nor the names of its contributors may be used |
| * to endorse or promote products derived from this software without specific |
| * prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <assert.h> |
| #include <debug.h> |
| #include <io_driver.h> |
| #include <io_storage.h> |
| #include <io_semihosting.h> |
| #include <plat_arm.h> |
| |
| /* IO devices */ |
| static const io_dev_connector_t *sh_dev_con; |
| static uintptr_t sh_dev_handle; |
| |
| |
| static int open_semihosting(const uintptr_t spec) |
| { |
| int result = IO_FAIL; |
| uintptr_t local_image_handle; |
| |
| /* See if the file exists on semi-hosting.*/ |
| result = io_dev_init(sh_dev_handle, (uintptr_t)NULL); |
| if (result == IO_SUCCESS) { |
| result = io_open(sh_dev_handle, spec, &local_image_handle); |
| if (result == IO_SUCCESS) { |
| VERBOSE("Using Semi-hosting IO\n"); |
| io_close(local_image_handle); |
| } |
| } |
| return result; |
| } |
| |
| void plat_arm_io_setup(void) |
| { |
| int io_result; |
| |
| arm_io_setup(); |
| |
| /* Register the additional IO devices on this platform */ |
| io_result = register_io_dev_sh(&sh_dev_con); |
| assert(io_result == IO_SUCCESS); |
| |
| /* Open connections to devices and cache the handles */ |
| io_result = io_dev_open(sh_dev_con, (uintptr_t)NULL, &sh_dev_handle); |
| assert(io_result == IO_SUCCESS); |
| |
| /* Ignore improbable errors in release builds */ |
| (void)io_result; |
| } |
| |
| int plat_arm_get_alt_image_source( |
| const uintptr_t image_spec, |
| uintptr_t *dev_handle) |
| { |
| int result = open_semihosting(image_spec); |
| if (result == IO_SUCCESS) |
| *dev_handle = sh_dev_handle; |
| |
| return result; |
| } |